Was just flicking through the eldar codex and came up with an idea
What about putting Eldrad with a unit of 10 pathfinders, through their combination of rules, they get a re-rollabke 3+ cover save, re-rolls on failed to hits, and re-rolls on to wound (it doesn't say failed wounds though
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This gives you a great chance of getting several AP1/2 hits, as you get re-rolls to hit (so with your pathfinder, any roll of 5/6 is ap1, and you can re-roll 1/2s so there is a good chance straight away) and then due to the wording of the rules, you can re-roll any to wound roll which isn't a 6 (as wounding a terminor normally won't be much good
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While I can appreciate flamers might be a problem, spreading the unit out in cover, and hopefully through the different levels of a building, you should be fine.
Let me know what you think